You may go up to 8% of Equity for the industry legend. Generally celebrities don't have time to actively participate in a startup's day to day activities or management, however, they may add up a huge value by endorsing the startup/brand. Therefore, 8% is a fair share. In case the celebrity is also putting in money or is ready to share his/her network and actively participate in the management, then you may go for up to 15% Equity.

I will be happy to talk to you if you need my help. Feel free to setup a call through clarity.

Thanks for reading
Shishir Gupta
CEO of StartupLanes